> It breaks the ABI and existing apps that *do* handle BUSY replies.  We can't 
> assume that no apps out there aren't written correctly.

I could be wrong, but I couldn't find a single example in the OFED 1.5.2 
package.

-----Original Message-----
From: Hefty, Sean [mailto:sean.he...@intel.com] 
Sent: Wednesday, August 11, 2010 1:58 PM
To: Todd Rimmer; Mike Heinz; linux-rdma@vger.kernel.org; Roland Dreier; Jason 
Gunthorpe; Hal Rosenstock
Subject: RE: Update proposal for handling BUSY responses from the SA/SM

> Coding IB applications is hard enough, let's not require it to be harder.
> We need a solution that fixes all the apps and makes it easy for future
> applications to have a sensible default behavior.

The mad interface is privileged, not some generic API available to any user 
space app.

> I think Mike's approach does that, minimizes risk, addresses 3rd party apps
> which may not be part of OFA, and has a path toward allowing sophisticated
> applications to control the behavior (few if any apps will really want to
> do that).

It breaks the ABI and existing apps that *do* handle BUSY replies.  We can't 
assume that no apps out there aren't written correctly. 

- Sean

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